But we are working less and less due to vastly increased productivity, and it's very clear in any graph of hours worked over time. And the effect is even bigger than the statistics show, because of the big shift from non-market to market labour - don't tell me that doing the laundry by hand, or being a subsistence farmer, isn't work, just because it's hard for government statisticians to measure! People today have far more leisure than at any time since the dawn of agriculture.

What is true is that hours worked haven't fallen as much as some people predicted (e.g. Keynes in "Economic Possiblities for our Grandchildren"). The reason for that seems pretty obvious - innovation doesn't just make us better at making the same old things, it also creates new things we want, and people have a pronounced tendency to underestimate the latter.